EP0940299B1 - Air bag device for side collision of automobile - Google Patents

Air bag device for side collision of automobile Download PDF

Info

Publication number
EP0940299B1
EP0940299B1 EP98943057A EP98943057A EP0940299B1 EP 0940299 B1 EP0940299 B1 EP 0940299B1 EP 98943057 A EP98943057 A EP 98943057A EP 98943057 A EP98943057 A EP 98943057A EP 0940299 B1 EP0940299 B1 EP 0940299B1
Authority
EP
European Patent Office
Prior art keywords
air bag
housing
splitting
opening portion
bag apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98943057A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0940299A4 (en
EP0940299A1 (en
Inventor
Kasumi Nissan Motor Co. Ltd. SEO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of EP0940299A1 publication Critical patent/EP0940299A1/en
Publication of EP0940299A4 publication Critical patent/EP0940299A4/en
Application granted granted Critical
Publication of EP0940299B1 publication Critical patent/EP0940299B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0006—Lateral collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23153—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for rear seat passengers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2176—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together the air bag components being completely enclosed in a soft or semi-rigid housing or cover
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection

Definitions

  • the present invention relates an air bag apparatus for lateral collision of an automobile according to the preamble of the independent claim 1.
  • An air bag apparatus of this type has a structure where an air bag and an inflator are accommodated in a metallic container opened at a front side thereof.
  • the air bag breaks through the seat back to develop forwards by gas injected from the inflator.
  • US 5,553,887 A discloses a side air bag assembly comprising a one-piece housing formed of thermo-plastic material and enclosing an air cushion and an inflator, wherein the one-piece housing includes an inboard and outboard half.
  • the two halves form on one side of the housing an opening portion and, accordingly, a deployment edge through which the air cushion could be expanded and developed.
  • the opening portion and, accordingly, the deployment edge are formed as a connecting portion of the inboard and outboard half.
  • DE 196 07 342 A1 discloses an air bag apparatus according to the preamble of claim 1, comprising a closed housing for housing an air bag, wherein the housing consists of two housing halves connected to each other by catch means.
  • the catch means are provided at respective ends of the housing halves and consist of a bracket on one side of the housing and a hook with a spring arm on the other side of the housing.
  • a predetermined braking point has been provided, so that when the air bag has been actuated the housing could be opened by disconnecting the two housing halves at the predetermined braking point and the air bag could be expanded and developed.
  • the splitting-opening portion is formed by a hook portion with a arrowhead-shaped cross section formed at one end portion of the housing and by a recessed portion with a cross section formed at the other end portion of the housing, wherein the cross section of the recessed portion is complemented to the arrowhead-shaped cross section of the hook portion.
  • the housing is formed of synthetic resin instead of a metallic container, so that the weight of the air bag apparatus can be reduced. Also, as the housing is deformable when it is pressed, there is no fear that the air bag apparatus gives a feeling of foreign matter to the back of a vehicle occupant. Since the splitting-opening portion where the end portions are engaged with each other is provided in the housing, the air bag is developed from a predetermined portion (the splitting-opening portion) of the housing without fail, so that the developing behavior of the air bag is made stable.
  • the housing is formed in one piece so as to surround peripheries of the air bag and the inflator to accommodate the air bag and the inflator, and the splitting-opening portion is formed by engaging the hook portion and the recessed portion of the end portions of the housing formed in the one piece with each other.
  • the housing is one piece, it can easily be manufactured.
  • the splitting-opening portion is configured by the hook portion formed at the one end of the housing and the recessed portion at the other end, the engaging force of the splitting-opening portion can easily be adjusted by changing the shapes and sizes of the hook portion and the recessed portion. Accordingly, the engaging force of the splitting-opening portion can easily be set to be an optimal magnitude in which the splitting-opening portion is not opened easily and it is opened securely when the air bag is developed.
  • the splitting-opening portion is provided at a vehicle transverse outer side position of the housing fixed to an end portion, in a vehicle transverse outer side direction, of a seat back.
  • the splitting-opening portion is positioned along the longitudinal direction of a vehicle. Accordingly, the pressure acting on the splitting-opening portion from the back of the vehicle occupant due to a normal use of the seat back acts so as to engage the hook portion and the recessed portion with each other, so that the splitting-opening portion is prevented from being opened due to a normal use of the seat back.
  • the splitting-opening portion is arranged at a rear side of the vehicle transverse outer side position.
  • the splitting-opening portion is arranged at the rear side of the outer side position, the vehicle occupant side face of the housing opened to extend forward by development of the air bag is elongated. Accordingly, the occupant side face of the housing, which has extended forward, serves as a guide for developing the air bag forward, and also serves so as to prevent the vehicle occupant and the air bag expanding rapidly from directly contacting with each other.
  • FIG. 1 A structure of an air bag 1 will be described on the basis of Fig. 1.
  • a housing 3 is built in the right side end portion of a seat back 2 of a rear seat.
  • the air bag 1 and an inflator 4 are accommodated in the housing 2.
  • the air bag 1 is formed in an almost L shape and is provided inside with a partition wall cloth 5 partitioning an inside space of the air bag 1 into a breast protecting portion A at a lower side and a head protecting portion B at an upper portion.
  • a vent hole 6 is formed at a front side of the partition wall cloth 5.
  • Injecting holes 7 are formed at a side face and lower portion of the inflator 4. Gas G injected from the injecting holes 7 first enters in the breast protecting portion A to develop the breast protecting portion A forward. Thereafter, the gas G in the breast protecting portion A flows into the head protecting portion B through the vent hole 6, so that the head protecting portion B is developed upwardly.
  • the housing 3 is configured with a cylindrical side face portion 8 extrusion molded with synthetic resin, and an upper cover 9 and a lower cover 10 made of synthetic resin.
  • the side face portion 8 has an approximately rectangular cross-sectional configuration with an oblique side portion 11 formed partially thereof, and is provided at a vehicle transverse outer side and rear side portion with a splitting-opening portion 12.
  • the splitting-opening portion 12 has a structure where a hook portion 13 with an arrowhead-shaped cross section formed at one end of the side face portion 8 and a groove portion 14 with an arrowhead-shaped cross section formed at the other end as a recessed portion are engaged with each other.
  • An engaging force in the splitting-opening portion 12 can easily be adjusted in accordance with the shapes and sizes of the hook portion 13 and the groove portion 14.
  • the engaging force is set to be an optimal one where the splitting-opening portion 12 is not opened easily against the pressure acting from the back of the vehicle occupant during a normal use of the seat back 2 and it is securely opened when the air bag 1 is developed.
  • the splitting-opening portion 12 thus structured is formed at a vehicle transverse outer side position of the side face portion 8, it is positioned along a vertical direction of the vehicle. Therefore, the pressure from the back of the vehicle occupant during a normal use of the seat back 2 acts on the hook portion 13 and the groove portion 14 in a direction in which the both are engaged with each other. Accordingly, the splitting-opening portion 12 is prevented from being opened when the seat back 2 is ordinarily used.
  • the inflator 4 is accommodated within the housing 3 in a state where it is inserted in a protecting pipe 15.
  • a pair of upper and lower bolts 16 formed on the protecting pipe 15 projects outside from passing-through holes 17 of the oblique face portion 11.
  • the projecting bolt 16 is provided with a temporarily retaining ring 18 (refer to Fig. 2).
  • the housing 3 where the air bag 1 and the inflator 4 are accommodated is handled as one module.
  • a seat back frame 20 with an oblique face portion 19 corresponding to the oblique face portion 11 is disposed at the right side end portion of the seat back 2.
  • the bolts 16 are made to pass through the oblique face portion 19 to be fixed to the seat back frame 20 by a nut 21, so that the mount of the housing is completed.
  • a pad 22 and an outer skin cover 23 of the seat back 2 are disposed forward of the housing 3 so as to surround the housing 3.
  • a sewn portion H of the outer skin cover 23 positioned at an outermost side, in the vehicle transverse direction, thereof constitutes an splitting-opening portion in the outer skin cover 23, and is sewn with a thread weaker than that in the other sewn portion.
  • the outer skin cover 23 at the vehicle transverse outermost side is connected to a pipe frame 35 through a reinforcing cloth 24. Accordingly, the outer skin cover 23 is securely opened and split at the sewn portion H.
  • the air bag 1 When gas G injected from the inflator 4 at a time of side collision of the vehicle, the air bag 1 is expanded in the housing 3 and the engagement of the splitting-opening portion 12 is disengaged, so that the housing 3 is put in an opened state. Since the splitting-opening portion 12 has a structure where the hook portion 13 and the groove portion 14 are engaged with each other, the air bag 1 is necessarily developed from the splitting-opening portion 12. Accordingly, the developing behavior of the air bag 1 is made stable.
  • the air bag 1 pressing and opening the splitting-opening portion 12 to develop forward further presses and breaks the pad 22 and the sewn portion H of the outer skin cover 23 to develop forward.
  • the housing 3 itself is made of synthetic resin, it is relatively soft.
  • a vehicle side portion of the air bag 1 is guided by the vehicle body side wall 26 and a vehicle occupant side portion of the air bag 1 is guided by a vehicle occupant side face 27 (refer to Fig. 4) of the housing 3 which has been opened and split to extend forward. Accordingly, even when the housing 3 is relatively soft, the air bag can be led sufficiently forward.
  • the splitting-opening portion 12 is provided at the vehicle transverse outer side and rear side position in the side face portion 8, the vehicle occupant side face 27 of the housing opened to extend forward by development of the air bag 1 is elongated, so that the air bag 1 developed forward is guided forward by the vehicle occupant side face 27. Also, the air bag 1 expanded rapidly and the vehicle occupant are prevented from directly contacting with each other by the vehicle occupant side face 27. Furthermore, the vehicle occupant side face 27 is long, so that it has a strong force pressing to break the pad 22 and the outer skin cover 23, or the like is large.
  • the synthetic resin cover extrusion molded is used as the housing 3, weight can be reduced as compared with a conventional metallic container. Also, since the synthetic resin cover is easily deformed when it is pressed, there is no fear that a feeling of foreign matter is given to the back of the vehicle occupant. Furthermore, as the synthetic resin cover can be formed by an extrusion molding, it can easily be manufactured.
  • the housing formed of synthetic resin As mentioned above, according to the present invention, as the housing formed of synthetic resin is used, the weight of the air bag apparatus for lateral collision is reduced. Also, the housing can easily be deformed, there is no fear that it gives a feeling of foreign matter to the back of a vehicle occupant.
  • the splitting-opening portion structured with the end portions engaged with each other is provided in the housing, the air bag is developed necessarily at a predetermined position (the splitting-opening portion), the developing behavior of the air bag is made stable.
  • the present invention is useful for an air bag apparatus for lateral collision of an automobile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Air Bags (AREA)
EP98943057A 1997-09-19 1998-09-18 Air bag device for side collision of automobile Expired - Lifetime EP0940299B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP25566097 1997-09-19
JP25566097 1997-09-19
PCT/JP1998/004228 WO1999015370A1 (fr) 1997-09-19 1998-09-18 Dispositif d'airbag pour collision laterale d'une automobile

Publications (3)

Publication Number Publication Date
EP0940299A1 EP0940299A1 (en) 1999-09-08
EP0940299A4 EP0940299A4 (en) 2002-09-04
EP0940299B1 true EP0940299B1 (en) 2005-01-19

Family

ID=17281847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98943057A Expired - Lifetime EP0940299B1 (en) 1997-09-19 1998-09-18 Air bag device for side collision of automobile

Country Status (5)

Country Link
US (1) US6341797B1 (ja)
EP (1) EP0940299B1 (ja)
KR (1) KR100360205B1 (ja)
DE (1) DE69828681T2 (ja)
WO (1) WO1999015370A1 (ja)

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US7204510B2 (en) 2001-08-02 2007-04-17 Daimlerchrysler Ag Occupant restraint system located in the rear passenger compartment of a motor vehicle

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US9789790B2 (en) 2014-10-03 2017-10-17 Ford Global Technologies, Llc Tuned flexible support member and flexible suspension features for comfort carriers
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204510B2 (en) 2001-08-02 2007-04-17 Daimlerchrysler Ag Occupant restraint system located in the rear passenger compartment of a motor vehicle

Also Published As

Publication number Publication date
WO1999015370A1 (fr) 1999-04-01
KR20000069039A (ko) 2000-11-25
KR100360205B1 (ko) 2002-11-08
US6341797B1 (en) 2002-01-29
EP0940299A4 (en) 2002-09-04
DE69828681T2 (de) 2005-06-30
DE69828681D1 (de) 2005-02-24
EP0940299A1 (en) 1999-09-08

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